MongoDB and Morphia - Traditionnal id (Long) instead of ObjectId

Question

Background:

My REST service project was started up by using Hibernate. I use id (Long) in domain class as part of the identifier in rest url, for example:

http://abc.com/customer-50 , where 50 is the Long id.

The Hibernate Annotated class is as below:

public class Customer {
@Id
@GeneratedValue
private Long id;
}

Now I need to migrate our design to Mongodb. The natural choice is using Morphia, which is an entity framework.

Problem: In Morphia, the id field is ObjectId

@Id private ObjectId id;

This will cause problem because: 1. It is not auto-increment, ie http://abc.com/customer-50 , http://abc.com/customer-51 , http://abc.com/customer-52 .

Now it become http://abc.com/customer-4d1b4687a6d5437619000000

1. I will need to change all the reference classes from long to objectId.

2. Is it possible to keep the original design (which uses Long id, instead of ObjectId)?

Thanks!

Answer 1

请查看https://code.google.com/p/morphia/source/browse/trunk/morphia/src/main/java/com/google/code/morphia/utils/LongIdEntity.java https：// github .com / mongodb / morphia / blob / master / morphia / src / test / java / org / mongodb / morphia / utils / LongIdEntity.java （链接更新） https://github.com/MorphiaOrg/morphia/blob/master/ morphia / src / test / java / xyz / morphia / utils / LongIdEntity.java （再次更新）